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A celebration of nature's spectacular lightshows, and a visual feast documenting the kaleidoscopic colors that decorate the sky. For millennia, humans have been fascinated with the ghostly green and red curtains of light that shimmer across the heavens on dark, clear nights. Ancient peoples saw these displays as souls of the dead, the torches of the spirits and as harbingers of war. Barely 100 years ago, scientists finally learned that an aurora is created when the Earth's magnetic field is bombarded with charged particles from the sun. When the charged particles collide with oxygen in the atmosphere, auroras with yellows, greens and reds appear. Collisions with nitrogen result in bluish colors. However, our understanding of the physics behind auroras has not detracted from their wonder. Auroras is filled with 80 photographs of one of nature's greatest spectacles, complete with captions that reflect on the folklore, science and beauty of the northern lights. The book poses and answers the many scientific questions about auroras: Why are auroras usually seen only at high latitudes? How do scientists study them? What causes the different colors? Why are massive auroras often followed by blackouts and computer system crashes? Auroras is where cutting-edge science meets the stuff of dreams.

Electric green pierced by neon blue, shocking pink spinning into violent red, and shimmering purple sidled up against deep indigo: never before have you seen such high-octane colors in the sky, and never before has a book shown the northern lights-aurora borealis-in such vivid color. In Northern Lights, photographers Calvin Hall and Daryl Pederson bring to print nearly a hundred photographs of this amazing natural phenomenon, shot from remote locations all over Alaska and using no filters or digital enhancement. Just as fascinating are the legends, myths, and science surrounding this polar phenomenon, described by George Bryson. As 2002 marks the peak viewing time of the northern lights in an eleven-year cycle, this book brings the elusive magic of the northern lights to stargazers near and far.

Science, biography, and arctic exploration coverage in this extraordinary true story of the life and work of Norwegian scientist Kristian Birkeland, the troubled genius who solved the mysteries of one of nature’s most spectacular displays. Captivated by the otherworldly lights of the aurora borealis, Birkeland embarked on a lifelong quest to discover their cause. His pursuit took him to some of the most forbidding landscapes on earth, from the remote snowcapped mountains of Norway to the war-torn deserts of Africa. In the face of rebuke by the scientific establishment, sabotage by a jealous rival, and his own battles with depression and paranoia, Birkeland remained steadfast. Although ultimately vindicated, his theories were unheralded—and his hopes for the Nobel Prize scuttled—at the time of his suspicious death in 1917. The Northern Lights offers a brilliant account of the physics behind the aurora borealis and a rare look inside the mind of one of history's most visionary scientists. From the Trade Paperback edition.

The beautiful aurorae, or northern lights, are the stuff of legends. The ancient stories of the Sami people warn that if you mock the lights they will seize you, and their mythical appeal continues to capture the hearts and imagination of people across the globe.

Many lights and other objects in the sky go unrecognised, or at least are little understood by those observing them. Such things range from the commonplace like rainbows and meteors, to the distinctly unusual like the green flash and ball lightning. And there is still a residuum of objects that remain unidentified by the watcher – classed generally as ‘UFOs’, a description which today has connotations of the mysterious, even of extraterrestrial visitors. The first part of this book is an identification guide, very much like the "plant identifier" sections found in a good gardening or botany book. It allows quick (and structured) identification of known aerial phenomena, whether at night or during the day. The objects thus found are referenced to the second part of the book... The second part gives a full description, physical explanation, and where relevant notes on observing and photographing the various phenomena. Some will need optical aids such as binoculars or telescopes, but the main thrust of the book is identification and explanation rather than imaging. The final chapter approaches UFOs from a scientific standpoint, particularly the way in which human perception and often preconception affects the outcome. It does however finish with a short section on "extraterrestrial UFOs", emphasising the burden of proof aspect and touching on the scientific theories of life on other worlds and the improbability of visitors.

Award-winning photographer and accomplished instructor Andy Long provides a comprehensive guide to photographing the Aurora Borealis. It, readers will learn everything they need to know about photographing this phenomenon—along with some very special techniques designed to help kick their image-making up to the next level. Long covers all the details from simply understanding the aurora and figuring out when and where to shoot, to picking the right gear to maximize your success, to processing your digital files after the shoot too maximize your results. You’ll learn how to capture the moon, star trails, and Milky Way in your images of the aurora—and even how to produce dazzling time-lapse images. Also covered are practical matters, like coping with long, cold, night-time shoots (and the equipment problems that can accompany them) and optimizing camera settings to reduce noise, maximize detail, and enhance/downplay lens distortion.

Page after page, this title proves that the power of attraction is undeniable. Readers move beyond a simple fascination with the power of magnets to a clear understanding of the science behind magnetics. Natural magnets, Earth's magnetic field, and the ties between electricity and magnetics are all featured, in addition to the creation and use of magnets in commercial and everyday applications. Information about the life and work of physicist Joseph Henry, a leading electromagnetics pioneer, and a timeline of important dates in the field are also included.

This beautifully illustrated work is a heartwarming story of a home lost and found--and a Christmas lesson for everyone. ""Aurora of the Northern Lights" could become for a new generation what "The Night Before Christmas" has been before it: a seasonal classic."--Greg Elliot.

More fascinating and harrowing accounts of the volunteer professionals who risk their lives to help those in desperate need. Praise for the second edition: "Direct and evocative, this well-written book pushes readers to the edge of a world of grueling realities not known by most Americans." -- Choice Doctors Without Borders (aka Medecins Sans Frontieres, or MSF) was founded in 1971 by rebellious French doctors. It is arguably the most respected humanitarian organization in the world, delivering emergency aid to victims of armed conflict, epidemics and natural disasters as well as to many others who lack reliable health care. Dan Bortolotti follows the volunteers at the forefront of this organization and its work, who daily risk their lives to perform surgery, establish or rehabilitate hospitals and clinics, run nutrition and sanitation programs, and train local medical personnel. These volunteer professionals: Perform emergency surgery in war-torn regions of Africa, Asia and elsewhere Treat the homeless in the streets of Europe Honor cultural customs and understand societal differences that affect health care Witness and report the genocidal atrocities so often missed by mainstream media This new and revised third edition includes updates and new inside stories from recent relief operations, and it covers changes within the organization, such as its new emphasis on nutrition. There are also many new and revealing color photographs and insights gained from the author's 2009 trip to Haiti, where he found three different arms of MSF operating in dire conditions. Hope in Hell is a widely acclaimed portrait of a renowned Nobel-winning humanitarian organization, revealing how Doctors Without Borders provides immediate and outstanding medical care.

Perfect for fans of Sarah J. Maas and Leigh Bardugo, Spindle Fire is an enthralling, wholly original reimagining of a classic faerie story. Half sisters Isabelle and Aurora are polar opposites: Isabelle is the king’s headstrong illegitimate daughter, whose sight was tithed by faeries; Aurora, beautiful and sheltered, was tithed her sense of touch and voice on the same day. Despite their differences, the sisters have always been extremely close. And then everything changes, with a single drop of Aurora’s blood, a Faerie Queen who is preparing for war, a strange and enchanting dream realm—and a sleep so deep it cannot be broken. Spindle Fire is a tour-de-force fantasy set in the dwindling, deliciously corrupt world of the fae and featuring two truly unforgettable heroines, from a writer destined to be a major voice in YA.

Welcome to a safe and secure new world, where beauty is bought and sold, and freedom is the ultimate crime The Registry saved the country from collapse, but stability has come at a price. In this patriotic new America, girls are raised to be brides, sold at auction to the highest bidder. Boys are raised to be soldiers, trained to fight and never question orders. Nearly eighteen, beautiful Mia Morrissey excitedly awaits the beginning of her auction year. But a warning from her married older sister raises dangerous questions. Now, instead of going up on the block, Mia is going to escape to Mexico—and the promise of freedom. All Mia wants is to control her own destiny—a brave and daring choice that will transform her into an enemy of the state, pursued by powerful government agents, ruthless bounty hunters, and a cunning man determined to own her . . . a man who will stop at nothing to get her back.

A woman burdened by war...A doctor torn between passion and duty...A sweeping tale of love in the face of dishonor from the incomparable storyteller--Kathleen Woodiwiss. Alaina MacGaren is forced to flee the devastation of her homeland in the guise of a young boy, only to find sanctuary in the arms of an enemy. Cole Latimer is a dashing Yankee surgeon who has served the Union faithfully, and his tender heart compels him to help a ragged, innocent "lad" in need--never suspecting the rags conceal a bewitching belle suspected of being a rebel spy. But Alaina's masquerade does not fool Cole for long. And the strength, courage, and breathtaking sensuality of this woman whom it would be treasonous to love sets duty and desire at war within him. Yet Destiny has joined them for good or ill--and they both must follow where their hearts would lead them, if they are to build a glorious new life together out of the ashes of the old.

Death is only the beginning... If there is one thing eighteen-year-old Aurora Sky wants, it's to get off the iceberg she calls home. Being kissed before she graduates wouldn't hurt either. Then a near-fatal car wreck changes everything. Government agents step in and save Aurora's life in exchange for her services as a vampire hunter. In Alaska. Basically she's a glorified chew toy. All thanks to her rare blood type, which sends a vampire into temporary paralysis right before she has to finish the job . . . by hand. Now Aurora's stuck with an overzealous partner, a group of misfit friends, and a maddening attraction to a rebellious man keeping secrets of his own. "Buffy meets Alias." --> Click the "Free Ebook" button and find out why readers are staying up late into the night to find out what happens next.

The final book in the thrilling epic fantasy Ley trilogy, set in a sprawling city of light and magic fueled by a ley line network. In a world torn apart by the shattering of the magical ley lines that formerly powered all the cities and towns of the Baronies, there are few havens left for the survivors. The uncontrolled distortions released by the shattering have claimed the main cities of the Baronial Plains. And many of the Wielders who controlled the ley died in the apocalyptic cataclysm their manipulation of the ley created. Wielder Kara Tremain and former Dog Allan Garrett, survivors of the city of Erenthrall’s destruction, have seized control of the new Nexus created at the distant temple known as the Needle, the stronghold of the White Cloaks and their leader, Father Dalton. With Father Dalton a prisoner, Kara intends to use the Needle’s Nexus to heal the major distortions that threaten to shake their entire world apart. But while she and the remaining Wielders managed to stabilize Erenthrall, they have not been able to stop the auroral storms or the devastating earthquakes sweeping across the lands. Now they are hoping to find a means to heal the distortion at the city of Tumbor, releasing the nodes captured inside. If they succeed, the ley network should be able to stabilize itself. But the distortion over Tumbor is huge, ten times the size of the one over Erenthrall. Kara will need the help of all of the Wielders at the Needle in order to generate enough power, including the rebel White Cloaks. But can Kara trust them to help her, or will the White Cloaks betray her in order to free Father Dalton and regain control of the Needle, possibly destroying any chance of healing the ley network in the process? Meanwhile, Allan journeys back to Erenthrall, hoping to form alliances with some of the survivors, only to discover that Erenthrall itself has sunk a thousand feet into the ground. The vicious groups that plagued them on their last visit have banded together under a new leader—Devin, formerly Baron Aurek’s second-in-command. While discussing an alliance with the Temerite enclave, Devin’s men attack, forcing Allan and the Temerites to flee back to the Needle, leaving Erenthrall in Devin’s hands. But the Needle is no safe haven. Father Dalton’s followers have begun to rebel, starting riots and creating unrest, all of it targeted at Kara and the Wielders. The tensions escalate beyond control when Father Dalton declares he’s had a vision—a vision in which the Needle is attacked from the north by dogs and from the south by snakes; a vision that ends with the quickening of the distortions called the Three Sisters to the north . . . and the annihilation of reality itself!